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[submitted] PDQ: Predict Different Quasars

The IDL code PDQ predicts the positions on the sky of high-redshift quasars that should provide photons that are both acausal and uncorrelated. The best dates and times for viewing those simultaneously with Gemini two-channel `Alopeke/Zorro imagers (for high-framerate photometry) in the coming semester are reported. The predicted signal-to-noise ratios are calculated at framerate sufficient for random-number generation input to a loophole-free Bell test, and are calibrated against a public archival dataset of four pairs of highly-separated bright stars observed simultaneously (and serendipitously) at 17 Hz with that same instrumentation in 2019 to 2021. This is the code described in "Observability of Acausal and Uncorrelated Optical-Quasar Pairs for Quantum-Mechanical Experiments" published in Universe. Running the default configuration of the code will produce all the tables and plots reported there.

Code site:
https://github.com/ericsteinbring/PDQ
Preferred citation method:

https://doi.org/10.3390/universe11040130


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